diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2015-05-11 22:55:21 +0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-06-09 13:43:48 -0400 |
| commit | 95678fb1f88e2a397378827536173534cf16a942 (patch) | |
| tree | eb0a71489b65340c2398b1bd5fa2a2fc8ad3875b /firmware/edgeport | |
| parent | 00f334969132a292e5cc7a383492fdfa9cc834c1 (diff) | |
KVM: MMU: fix SMAP virtualization
[ Upstream commit 0be0226f07d14b153a5eedf2bb86e1eb7dcefab5 ]
KVM may turn a user page to a kernel page when kernel writes a readonly
user page if CR0.WP = 1. This shadow page entry will be reused after
SMAP is enabled so that kernel is allowed to access this user page
Fix it by setting SMAP && !CR0.WP into shadow page's role and reset mmu
once CR4.SMAP is updated
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'firmware/edgeport')
0 files changed, 0 insertions, 0 deletions